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From "Kaeshammer, Miriam" <miriam.kaesham...@sap.com>
Subject ConcurrentModificationException with CasDumpWriter
Date Fri, 30 Jun 2017 15:17:48 GMT
Hi,

I get a java.util.ConcurrentModificationException (see below) when using the CasDumpWriter
in the following way:

import static org.apache.uima.fit.factory.AnalysisEngineFactory.createEngine;
import org.apache.uima.UIMAException;
import org.apache.uima.analysis_engine.AnalysisEngine;
import org.apache.uima.fit.component.CasDumpWriter;
import org.apache.uima.fit.factory.JCasFactory;
import org.apache.uima.jcas.JCas;
import org.junit.Test;

public class CasDumpWriterTest {

    @Test
    public final void testDump() throws UIMAException {

        // Set up the CAS
        JCas jcas = JCasFactory.createJCas();
        JCas view = jcas.createView("testview");
        view.setDocumentText("test");

        AnalysisEngine dump = createEngine(CasDumpWriter.class, //
                    CasDumpWriter.PARAM_OUTPUT_FILE, "target/cas-dump.txt");

        dump.process(jcas);

    }
}

Is there anything I am doing wrong? How can I use the CasDumpWriter without causing this exception?
I am using UIMA 2.9.0 and uimafit 2.2.0, but the same also happens with 2.3.0. This definitely
worked with earlier version of UIMA.

If this is not the write channel to ask this question, please let me know.

Thank you!
Best regards, Miriam


Output:

Jun 30, 2017 5:12:31 PM org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl
callAnalysisComponentProcess(430)
SEVERE: Exception occurred
org.apache.uima.analysis_engine.AnalysisEngineProcessException: Annotator processing failed.
                at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.callAnalysisComponentProcess(PrimitiveAnalysisEngine_impl.java:412)
                at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.processAndOutputNewCASes(PrimitiveAnalysisEngine_impl.java:314)
                at org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase.process(AnalysisEngineImplBase.java:269)
                at org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase.process(AnalysisEngineImplBase.java:284)
                at com.sap.gs.hlt.mt.pipelines.de.nmt.CasDumpWriterTest.testDump(CasDumpWriterTest.java:25)
                at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
                at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
                at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
                at java.lang.reflect.Method.invoke(Method.java:497)
                at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
                at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
                at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
                at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
                at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
                at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
                at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
                at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
                at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
                at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
                at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
                at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
                at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
                at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
                at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.util.ConcurrentModificationException
                at org.apache.uima.cas.impl.FSIntIteratorImplBase.checkConcurrentModification(FSIntIteratorImplBase.java:67)
                at org.apache.uima.cas.impl.IntIterator4bag.get(IntIterator4bag.java:79)
                at org.apache.uima.cas.impl.FSIteratorWrapper.get(FSIteratorWrapper.java:63)
                at org.apache.uima.cas.impl.FSIteratorImplBase.next(FSIteratorImplBase.java:66)
                at org.apache.uima.cas.impl.FSIteratorImplBase.next(FSIteratorImplBase.java:32)
                at org.apache.uima.cas.impl.CASImpl$1.next(CASImpl.java:5104)
                at org.apache.uima.cas.impl.CASImpl$1.next(CASImpl.java:5077)
                at org.apache.uima.fit.component.CasDumpWriter.process(CasDumpWriter.java:151)
                at org.apache.uima.analysis_component.CasAnnotator_ImplBase.process(CasAnnotator_ImplBase.java:56)
                at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.callAnalysisComponentProcess(PrimitiveAnalysisEngine_impl.java:396)
                ... 27 more





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